[[Property:title|Reference for `eif_attribute'.]]
[[Property:link_title|eif_attribute]]
[[Property:weight|-12]]
[[Property:uuid|c843f272-8ac2-c30e-e71f-bd6c567e9de3]]
==SYNOPSYS==
<code>
'''#include "eif_cecil.h"

EIFFEL_TYPE eif_attribute (EIF_REFERENCE''' ''object''''', char *''' ''name''''', EIFFEL_TYPE, int *''' ''status'');</code>

==DESCRIPTION==
The '''eif_attribute()''' macro returns the attribute of name ''name'', which is of type ''EIFFEL_TYPE''. 
''EIFFEL_TYPE'' is the type of the Eiffel attribute. It can be: '''EIF_INTEGER''', '''EIF_CHARACTER''', '''EIF_BOOLEAN''', '''EIF_DOUBLE''', '''EIF_REAL''', or '''EIF_REFERENCE'''. 

If ''status'' is NULL then no status is set. Otherwise the status of the call is put into ''*status''. Its value is one of the following: 

If the visible exception is enabled, then a visible exception is raised upon failure ( '''EIF_NO_ATTRIBUTE''', '''EIF_CECIL_ERROR'''). 

==RETURN VALUE==
Upon failure, it returns ( ''EIFFEL_TYPE'') 0, otherwise the attribute is returned. 
==NOTES==
If the return value is an '''EIF_REFERENCE''', you must protect it with '''eif_protect()'''. <br/>
You cannot access a constant attribute, or the result of a once function with '''eif_attribute()'''. 
==CONFORMANCE==
ISE Eiffel 4.5 and later. 
==COMPATIBILITY==
'''eif_attribute (''' ''object'' ''',''' ''name'' ''',''' ''type'' ''',''' ''NULL'' ''')''' <br/>
is equivalent to: <br/>
'''eif_field (''' ''object'' ''',''' ''name'' ''',''' ''type'' ''')''' <br/>
which is deprecated. 
==SEE ALSO==
'''eif_protect'''(1) , '''attribute_exists'''(1) , '''eif_procedure'''(1) , '''eif_reference_function'''(1). Markup created by 1. 0, November 15, 1999.